Polymer-based nano-inks for solar cells

Polymer-based nano-inks represent a versatile class of materials exploited in fundamental materials science as in cutting-edge technologies. An intelligent selection of polymer and filler can generate a library of nanocomposites with programmable functionalities. Owing to this exceptional and facile tunability of solid-state physical–chemical properties and broad prospects for applications, polymer-based nano-inks are envisioned as cornerstone constituent of next-generation, low-cost optoelectronic devices. In the last decade, the surge of hybrid halide perovskite materials represented a fundamental breakthrough in contemporary optoelectronics, particularly in solar cells; therefore, numerous strategies have been explored for incorporating polymer-based nano-inks into halide perovskite-based photovoltaic devices. Polymeric materials have been exploited in different fashions, as to improve the processability, mechanical robustness and moisture tolerance of perovskite materials, and to fabricate more efficient transporting layers or printable electrodes for perovskite solar cells.